Newbie here, hello all!

I was wondering if anyone knew of any training out there that helps you become very proficient with Microsoft Office, particularly Word and PowerPoint. I already know 'how' to use them, my goal is to increase my productivity and to know all the functioning and features like creating forms, styles, creating templates, tables, charts etc. Is there training out there that is specific to productivity, proficiency and advanced knowledge? It doesn't matter if it's classroom, online, DVD, etc. The majority of what I have found has been 'how' to use the software. Thanks!